커널 부팅시 파일 시스템 마운트 에러입니다.

바닐라 커널을 가지고 하이버스 PXA270보드에 올리고 있는데요

이런 에러때문에 멈춰버렸습니다.

이게 어떤 에러인지 알수 있을까요?

뭘 손대야 할지 막막합니다. oops

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GURUGIO > tftp zz kernel
tftp start...
my ip address 10.51.15.132
server ip address 10.51.15.126
filename zz
store at 0xA0008000
loading start...
450472 (0x0006DFA8) bytes received. done.
GURUGIO > boot
starting kernel ...
Uncompressing Linux............................... done, booting the kernel.
Linux version 2.6.11 (root@gioserver.skku.ac.kr) (gcc version 3.4.3) #5 Tue Oct5CPU XScale-PXA270 [69054117] revision 7 (ARMv5TE)
CPU0 D VIVT undefined 5 cache
CPU0 I cache 32768 bytes, associativity 32, 32 byte lines, 32 sets
CPU0 D cache 32768 bytes, associativity 32, 32 byte lines, 32 sets
Machine SKKU 2005
Memory policy ECC disabled, Data cache writeback
Run Mode clock 208.00MHz (*16)
Turbo Mode clock 520.00MHz (*2.5, active)
Memory clock 104.00MHz (/2)
System bus clock 104.00MHz
Built 1 zonelists
Kernel command line console=ttyS0,115200 mem=64M root=1F02 rw
PID hash table entries 512 (order 9, 8192 bytes)
Dentry cache hash table entries 16384 (order 4, 65536 bytes)
Inode-cache hash table entries 8192 (order 3, 32768 bytes)
Memory 64MB = 64MB total
Memory 63872KB available (742K code, 134K data, 52K init)
Mount-cache hash table entries 512 (order 0, 4096 bytes)
CPU Testing write buffer coherency ok
Linux NoNET1.0 for Linux 2.6
NetWinder Floating Point Emulator V0.97 (double precision)
JFFS2 version 2.2. (C) 2001-2003 Red Hat, Inc.
ttyS0 at MMIO 0x40100000 (irq = 22) is a FFUART
ttyS1 at MMIO 0x40200000 (irq = 21) is a BTUART
ttyS2 at MMIO 0x40700000 (irq = 20) is a STUART
io scheduler noop registered
io scheduler anticipatory registered
io scheduler deadline registered
io scheduler cfq registered
Probing flash0 at physical address 0x00000000 (32-bit bankwidth)
flash0 Found 2 x16 devices at 0x0 in 32-bit bank
Intel/Sharp Extended Query Table at 0x0031
Using buffer write method
cfi_cmdset_0001 Erase suspend on write enabled
Using static partitions on flash0
Creating 3 MTD partitions on "flash0"
0x00000000-0x00040000 "boot"
0x00040000-0x001c0000 "kernel"
0x001c0000-0x02000000 "rootfs"
Kernel panic - not syncing VFS Unable to mount root fs on unknown-block(31,2)
.